CN110000899B - Blank making device - Google Patents
Blank making device Download PDFInfo
- Publication number
- CN110000899B CN110000899B CN201910406524.3A CN201910406524A CN110000899B CN 110000899 B CN110000899 B CN 110000899B CN 201910406524 A CN201910406524 A CN 201910406524A CN 110000899 B CN110000899 B CN 110000899B
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- Prior art keywords
- upper die
- frame
- lower die
- die
- blank
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000463 material Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 4
- 239000010931 gold Substances 0.000 abstract description 4
- 229910052737 gold Inorganic materials 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 241001408630 Chloroclystis Species 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Press Drives And Press Lines (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The application discloses a blank making device, which comprises: a frame (1); the lower die mechanism (2) is arranged on the frame (1), and the lower die mechanism (2) comprises a detachable lower die (21); the upper die mechanism (3) is arranged on the frame (1), the upper die mechanism (3) comprises an upper die (31) matched with the lower die (21), and the upper die mechanism (3) can drive the upper die (31) to be close to or far away from the lower die (21). According to the blank making device provided by the application, the mechanical making of the crucible blank is realized through the matching of the upper die mechanism and the lower die mechanism, so that the blank making efficiency can be effectively improved, meanwhile, the blank pressing quality, uniformity, density and porosity can be improved, the quality uniformity of each batch of blanks is ensured, and the blank making device is particularly suitable for the blank making of a gold melting crucible.
Description
Technical Field
The application relates to the technical field of crucible forming, in particular to a blank making device.
Background
The crucible is a vessel for melting and refining metal liquid, and heating and reacting the solid and the liquid. The crucible is usually used in a high-temperature environment and is easy to erode by carried substances, and in order to ensure the smooth proceeding of the reaction of the content, the crucible is required to have good quality, high temperature resistance and erosion resistance, and the occurrence of perforation and dislocation is reduced.
The preparation of the crucible requires the steps of molding raw materials, preparing blanks, drying, sintering and the like to obtain finished products. The quality of the blank has a great influence on the quality of the finished crucible. The quality of the blank is difficult to control by adopting manual manufacturing.
Therefore, how to provide a blank making device to achieve high quality blank making is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In order to solve the technical problems, the application aims to provide a blank making device; according to the blank making device provided by the application, the mechanical making of the crucible blank is realized through the matching of the upper die mechanism and the lower die mechanism, so that the blank making efficiency can be effectively improved, meanwhile, the blank pressing quality, uniformity, density and porosity can be improved, the quality uniformity of each batch of blanks is ensured, and the blank making device is particularly suitable for the blank making of a gold melting crucible.
The technical scheme provided by the invention is as follows:
A blank-making apparatus comprising:
A frame;
the lower die mechanism is arranged on the frame and comprises a detachable lower die;
The upper die mechanism is arranged on the frame and comprises an upper die matched with the lower die, and the upper die mechanism can drive the upper die to be close to or far away from the lower die.
Preferably, the lower die mechanism includes a lower die frame for accommodating the lower die.
Preferably, the shape of the lower die frame is matched with that of the lower die.
Preferably, the lower die carrier is in a round bowl shape.
Preferably, the lower die mechanism further comprises a support member, the support member is fixedly connected with the frame, the lower die frame is arranged on the support member, and a buffer material is arranged between the lower die frame and the support member.
Preferably, the lower die carrier is rotatably arranged on the supporting piece, and the lower die mechanism further comprises a lower die driving component for driving the lower die carrier to rotate; ; the upper die is rotatably arranged on the upper die mechanism.
Preferably, the upper die mechanism is provided with a wiper blade.
Preferably, the upper die mechanism further comprises an upper die driving part and a supporting rod, wherein the upper die driving part drives the upper die to rotate around the supporting rod or drive the upper die to move along the supporting rod.
Preferably, the upper die driving part drives the upper die to rotate around the supporting rod specifically comprises: the upper die mechanism is further provided with an upper die moving frame, the supporting rod is horizontally arranged on the frame, the upper die moving frame is rotatably arranged on the supporting rod, the upper die is fixedly connected with the upper die moving frame, and the upper die driving part drives the upper die moving frame to rotate around the supporting rod.
Preferably, the upper die driving part drives the upper die to move along the supporting rod specifically comprises: the support rod is vertically arranged on the frame, the upper die is movably arranged on the support rod, and the upper die driving part drives the upper die to move up and down along the support rod.
The application provides a blank making device, comprising: a frame; the lower die mechanism is arranged on the frame and comprises a detachable lower die; the upper die mechanism is arranged on the frame and comprises an upper die matched with the lower die, and the upper die mechanism can drive the upper die to be close to or far away from the lower die. According to the blank making device provided by the application, the mechanical making of the crucible blank is realized through the matching of the upper die mechanism and the lower die mechanism, so that the blank making efficiency can be effectively improved, meanwhile, the blank pressing quality, uniformity, density and porosity can be improved, the quality uniformity of each batch of blanks is ensured, and the blank making device is particularly suitable for the blank making of a gold melting crucible.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic view of a blank making device according to an embodiment of the present invention;
Reference numerals: 1-a frame; 2-a lower die mechanism; 21-a lower die; 22-lower die carrier; 23-a support; 24-a lower die driving part; 3-an upper die mechanism; 31-upper die; 32-upper die driving part; 33-supporting rod; 34-upper die moving rack.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of a plurality of "a number" is two or more, unless explicitly defined otherwise.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the application, which is defined by the claims, but rather by the claims, unless otherwise indicated, and that any structural modifications, proportional changes, or dimensional adjustments, which would otherwise be apparent to those skilled in the art, would be made without departing from the spirit and scope of the application.
The embodiment of the application is written in a progressive manner.
As shown in fig. 1, an embodiment of the present invention provides a blank making device, including:
A frame 1;
a lower die mechanism 2 arranged on the frame 1, wherein the lower die mechanism 2 comprises a detachable lower die 21;
The upper die mechanism 3 is arranged on the frame 1, the upper die mechanism 3 comprises an upper die 31 matched with the lower die 21, and the upper die mechanism 3 can drive the upper die 31 to be close to or far away from the lower die 21.
The application provides a blank making device, comprising: a frame 1; a lower die mechanism 2 arranged on the frame 1, wherein the lower die mechanism 2 comprises a detachable lower die 21; the upper die mechanism 3 is arranged on the frame 1, the upper die mechanism 3 comprises an upper die 31 matched with the lower die 21, and the upper die mechanism 3 can drive the upper die 31 to be close to or far away from the lower die 21. According to the blank making device provided by the application, the upper die mechanism 3 and the lower die mechanism 2 are matched to realize the mechanized making of crucible blanks, so that the blank making efficiency can be effectively improved, meanwhile, the blank pressing quality, uniformity, density and porosity can be improved, the quality uniformity of each batch of blanks is ensured, and the blank making device is particularly suitable for the blank making of a gold melting crucible.
Specifically, the blank making device provided by the application comprises the following steps: a certain amount of blank-making pug is placed in the lower die 21, then the upper die mechanism 3 drives the upper die 31 to approach the lower die 21, and as the upper die 31 is matched with the lower die 21, the upper die 31 enters the lower die 21 and extrudes the pug in the lower die 21 until the upper die 31 moves to the limit position, and at the moment, the pug is extruded and filled into the space between the upper die 31 and the lower die 21 to form a blank body. Then the upper die mechanism 3 drives the upper die 31 to be far away from the lower die 21, at this time, the lower die 21 and the blank inside the lower die can be taken out together, then another lower die 21 is put in, then blank making pugs are put in, and the next blank making process is carried out. To ensure the integrity of the blank, a bit more pug is typically added than is necessary, and excess pug is squeezed above the top surface of the lower die 21 and scraped off.
Meanwhile, as the lower die 21 used by the lower die mechanism 2 is in a detachable form, when the blank which is just manufactured is still in a wet state, the blank is not required to be taken out of the lower die 21, but the lower die 21 and the blank which is accommodated by the lower die are taken down together, and the subsequent drying step is carried out, so that the quality of the wet blank is effectively prevented from being reduced due to falling, deformation or collision in the process of taking out and moving, and the quality of the blank is ensured; and the green body is not required to be taken out when being wetted, and a corresponding taking-out mechanism and a corresponding procedure are not required to be arranged, so that the structure of the device can be simplified, and the working efficiency is improved.
Preferably, the lower die mechanism 2 includes a lower die frame 22 for accommodating the lower die 21.
Preferably, the shape of the lower mold frame 22 is matched with the lower mold 21.
Preferably, the lower mold frame 22 is in a shape of a circular bowl.
In order to enable the lower die 21 to be stably set in the lower die mechanism 2 during the blank making process, it is preferable to provide the lower die frame 22, and to house the lower die 21 in the lower die frame 22. In addition, the lower die frame 22 is also convenient for manual or mechanical operation, and the lower die 21 is placed at a fixed point position, so that the upper die 31 is aligned with the lower die 21, and the molding quality of the pugs is high. More preferably, the shape of the lower die carrier 22 is matched with the lower die carrier 21, so that the lower die carrier 21 is directly fixed without displacement when being put into the lower die carrier 22, and the positioning accuracy of the lower die carrier 21 is further improved. Since the crucible is generally a deep bowl-shaped container, and the inner wall of the lower mold 21 is formed to match the outer wall of the crucible, the lower mold 21 is also generally formed into a deep round bowl-shaped container for convenience and material saving, and therefore the lower mold frame 22 is preferably formed into a round bowl-shaped container. In order to facilitate the removal and placement of the lower die 21, the height of the lower die frame 22 is preferably set slightly lower than the lower die 21.
Preferably, the lower die mechanism 2 further includes a supporting member 23, the supporting member 23 is fixedly connected with the frame 1, the lower die frame 22 is disposed on the supporting member 23, and a buffer material is disposed between the lower die frame 22 and the supporting member 23.
Because the upper mold 31 applies a certain pressure to the lower mold 21 due to the molding requirement of the pug, the support member 23 is preferably provided to support the lower mold frame 22, and the cushioning material is provided between the lower mold frame 22 and the support member 23 to relieve the impact of the pressure on the whole device during molding.
Preferably, the lower die frame 22 is rotatably disposed on the supporting member 23, and the lower die mechanism 2 further includes a lower die driving part 24 for driving the lower die frame 22 to rotate; ; the upper die (31) is rotatably arranged on the upper die mechanism (3).
Preferably, the upper die mechanism 2 is provided with a wiper blade.
By arranging the upper die 31 and the lower die frame 22 to be rotatable respectively, the quality of the blank can be further improved by controlling the steering and the rotating speed. Specifically, the rotating speed of the lower die frame 22 is set to be higher than that of the upper die 31, the rotating speed of the lower die 21 is set to be higher than that of the upper die 31, meanwhile, the rotating directions of the lower die frame 22 and the upper die 31 are set to be opposite, and the rotating speeds of the lower die frame 22 and the upper die 31 are set to be different in directions, so that the extrusion of redundant pugs is facilitated, the compactness of a blank body is improved, and the defects in the appearance of a product are reduced.
The upper die mechanism 2 is preferably provided with a scraping blade, so that the upper die 31 and the lower die 21 can automatically hang off redundant pugs in the selection process. The wiper blade is preferably disposed at a position where the upper die mechanism 3 is flush with the upper opening of the lower die 21 when the upper die 31 is inserted into the lower die 21.
Preferably, the upper die mechanism 3 further comprises an upper die driving part 32 and a supporting rod 33, wherein the upper die driving part 32 drives the upper die 31 to rotate around the supporting rod 33 or drives the upper die 31 to move along the supporting rod 33.
In the present application, the movement of the upper die 31 toward or away from the lower die 21 is preferably performed by the upper die driving member 32 and the support rod 33. The upper die driving part 32 drives the upper die 31 to rotate around the support rods 33 according to the different positions of the support rods 33 so as to realize that the upper die 31 approaches to or departs from the lower die 21; the upper die 31 may also be driven to move along the struts 33 to achieve the upper die 31 approaching or moving away from the lower die 21.
Preferably, the upper die driving part 32 drives the upper die 31 to rotate around the supporting rod 33 specifically: the upper die mechanism 3 is further provided with an upper die moving frame 34, the supporting rod 33 is horizontally arranged on the frame 1, the upper die moving frame 34 is rotatably arranged on the supporting rod 33, the upper die 31 is fixedly connected with the upper die moving frame 34, and the upper die driving part 32 drives the upper die moving frame 34 to rotate around the supporting rod 33.
As a first embodiment, the upper die driving part 32 drives the upper die 31 to rotate around the supporting rod 33, specifically, by horizontally arranging the supporting rod 33, then arranging an upper die moving frame 34 rotatable around the supporting rod 33, fixedly connecting the upper die 31 with the upper die moving frame 34, and driving the upper die driving part 32 to rotate around the supporting rod 33. The upper die 31 and the lower die 21 can be matched by adjusting the rotation radius of the upper die moving frame 34.
The upper die driving part 32 is preferably fixedly arranged on the upper die moving frame 34, and the relative positions of the upper die moving frame 34 and the supporting rods 33 are changed by outputting torsion force; in the present application, other conventional arrangements may be employed to enable the force output from the upper die driving member 32 to change the relative positions of the upper die moving frame 34 and the supporting rods 33. Preferably, a buffer mechanism is provided between the upper die 31 and the upper die-moving frame 34 to buffer the pressure.
Preferably, the upper die driving part 32 drives the upper die 31 to move along the supporting rod 33 specifically: the support rod 33 is vertically arranged on the frame 1, the upper die 31 is movably arranged on the support rod 33, and the upper die driving part 32 drives the upper die 31 to move up and down along the support rod 33.
As a second embodiment, the upper die driving part 32 drives the upper die 31 to move along the supporting rod 33, specifically, the supporting rod 33 is vertically arranged on the frame 1, and the upper die 31 is driven by the upper die driving part 32 to move up and down along the supporting rod 33. The upper die 31 and the lower die 21 can be matched by adjusting the position of the supporting rod 33 or adjusting the position of the upper die 31 extending out of the supporting rod 33.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A blank-making apparatus, comprising:
a frame (1);
The lower die mechanism (2) is arranged on the frame (1), and the lower die mechanism (2) comprises a detachable lower die (21);
The upper die mechanism (3) is arranged on the frame (1), the upper die mechanism (3) comprises an upper die (31) matched with the lower die (21), and the upper die mechanism (3) can drive the upper die (31) to be close to or far away from the lower die (21);
The lower die mechanism (2) comprises a lower die frame (22) for accommodating the lower die (21); the lower die mechanism (2) further comprises a supporting piece (23), the supporting piece (23) is fixedly connected with the frame (1), the lower die frame (22) is rotatably arranged on the supporting piece (23), and a buffer material is arranged between the lower die frame (22) and the supporting piece (23); the lower die mechanism (2) further comprises a lower die driving component (24) for driving the lower die frame (22) to rotate;
the upper die (31) is rotatably arranged on the upper die mechanism (3); the upper die mechanism (3) further comprises an upper die driving component (32) and a supporting rod (33), wherein the upper die driving component (32) drives the upper die (31) to rotate around the supporting rod (33) or drives the upper die (31) to move along the supporting rod (33).
2. Blank-making device according to claim 1, characterized in that said lower mould frame (22) is shaped to match said lower mould (21).
3. Blank-making device according to claim 2, characterized in that said lower mould frame (22) is of circular bowl shape.
4. Blank-making device according to claim 1, characterized in that said upper mould mechanism (3) is provided with a wiper blade.
5. Blank-making device according to claim 1, wherein said upper die driving means (32) drive said upper die (31) to rotate about said struts (33) in particular: the upper die mechanism (3) is further provided with an upper die moving frame (34), the supporting rods (33) are horizontally arranged on the frame (1), the upper die moving frame (34) is rotatably arranged on the supporting rods (33), the upper die (31) is fixedly connected with the upper die moving frame (34), and the upper die driving component (32) drives the upper die moving frame (34) to rotate around the supporting rods (33).
6. Blank-making device according to claim 1, wherein said upper die driving means (32) drive said upper die (31) along said struts (33) in particular: the support rod (33) is vertically arranged on the frame (1), the upper die (31) is movably arranged on the support rod (33), and the upper die driving component (32) drives the upper die (31) to move up and down along the support rod (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406524.3A CN110000899B (en) | 2019-05-16 | 2019-05-16 | Blank making device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406524.3A CN110000899B (en) | 2019-05-16 | 2019-05-16 | Blank making device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110000899A CN110000899A (en) | 2019-07-12 |
| CN110000899B true CN110000899B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910406524.3A Active CN110000899B (en) | 2019-05-16 | 2019-05-16 | Blank making device |
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| Country | Link |
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| CN (1) | CN110000899B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117774093B (en) * | 2024-02-26 | 2024-05-03 | 潍坊萨伯特精密转动设备有限公司 | Screw pump stator plaster model take-out device |
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| US4519766A (en) * | 1981-05-04 | 1985-05-28 | Stanztechnik Gmbh R+S | Apparatus for manufacturing three-dimensional work pieces |
| DE4445965C1 (en) * | 1994-09-30 | 1996-01-04 | Haendle Gmbh & Co Kg | Press for ceramic masses, esp. brick moulding press |
| CN106239700A (en) * | 2016-08-19 | 2016-12-21 | 九牧厨卫股份有限公司 | A kind of ceramic body high-pressure molding technique |
| CN106239702A (en) * | 2016-09-27 | 2016-12-21 | 广东科达洁能股份有限公司 | A kind of continuously shaped ceramic brick press and production technology thereof |
| CN210100261U (en) * | 2019-05-16 | 2020-02-21 | 湖南富强特种陶瓷制造有限公司 | Blank making device |
-
2019
- 2019-05-16 CN CN201910406524.3A patent/CN110000899B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4519766A (en) * | 1981-05-04 | 1985-05-28 | Stanztechnik Gmbh R+S | Apparatus for manufacturing three-dimensional work pieces |
| DE4445965C1 (en) * | 1994-09-30 | 1996-01-04 | Haendle Gmbh & Co Kg | Press for ceramic masses, esp. brick moulding press |
| CN106239700A (en) * | 2016-08-19 | 2016-12-21 | 九牧厨卫股份有限公司 | A kind of ceramic body high-pressure molding technique |
| CN106239702A (en) * | 2016-09-27 | 2016-12-21 | 广东科达洁能股份有限公司 | A kind of continuously shaped ceramic brick press and production technology thereof |
| WO2018059012A1 (en) * | 2016-09-27 | 2018-04-05 | 广东科达机电股份有限公司 | Continuous forming ceramic brick press and production process thereof |
| CN210100261U (en) * | 2019-05-16 | 2020-02-21 | 湖南富强特种陶瓷制造有限公司 | Blank making device |
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| CN110000899A (en) | 2019-07-12 |
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